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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI] igt@* - dmesg-warn - WARNING: CPU: 3 PID: 38 at sound/hda/hdac_i915.c:92 snd_hdac_display_power+0xd3/0xf0 [snd_hda_core] -> WARN_ON(!bus->i915_power_refcount)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104238#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI] igt@* - dmesg-warn - WARNING: CPU: 3 PID: 38 at sound/hda/hdac_i915.c:92 snd_hdac_display_power+0xd3/0xf0 [snd_hda_core] -> WARN_ON(!bus->i915_power_refcount)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104238">bug 104238</a>
from <span class="vcard"><a class="email" href="mailto:marta.lofstedt@intel.com" title="Marta Löfstedt <marta.lofstedt@intel.com>"> <span class="fn">Marta Löfstedt</span></a>
</span></b>
<pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_16/fi-kbl-7567u/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-a-planes.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_16/fi-kbl-7567u/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-a-planes.html</a>
[ 113.804098] Suspending console(s) (use no_console_suspend to debug)
[ 113.808358] WARNING: CPU: 3 PID: 1536 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 113.808363] Modules linked in: snd_hda_intel i915 vgem snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic btusb x86_pkg_temp_thermal btrtl
intel_powerclamp btbcm btintel coretemp crct10dif_pclmul bluetooth crc32_pclmul
ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core ecdh_generic snd_pcm
e1000e mei_me mei prime_numbers [last unloaded: i915]
[ 113.808467] CPU: 3 PID: 1536 Comm: kworker/u8:51 Tainted: G U
4.16.0-rc7-g1be073153147-drmtip_16+ #1
[ 113.808471] Hardware name: /NUC7i7BNB, BIOS
BNKBL357.86A.0054.2017.1025.1822 10/25/2017
[ 113.808480] Workqueue: events_unbound async_run_entry_fn
[ 113.808495] RIP: 0010:snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 113.808500] RSP: 0018:ffffa2b40093bcf0 EFLAGS: 00010246
[ 113.808508] RAX: 00000000ffffffff RBX: ffff9587adad22a8 RCX:
00000000fffd28ac
[ 113.808512] RDX: 0000000000000002 RSI: 0000000000000000 RDI:
ffff9587adad22a8
[ 113.808517] RBP: 0000000000000000 R08: 000000004bebdccd R09:
0000000000000001
[ 113.808521] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[ 113.808525] R13: ffff9587a6b667d8 R14: 0000000000000000 R15:
0000000000000000
[ 113.808531] FS: 0000000000000000(0000) GS:ffff9587bed80000(0000)
knlGS:0000000000000000
[ 113.808536] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 113.808540] CR2: 00007f5b3d505038 CR3: 000000003a210001 CR4:
00000000003606e0
[ 113.808544] Call Trace:
[ 113.808558] ? __pm_runtime_use_autosuspend+0x60/0x60
[ 113.808573] hda_codec_runtime_suspend+0x74/0xa0 [snd_hda_codec]
[ 113.808583] pm_runtime_force_suspend+0x34/0xe0
[ 113.808592] dpm_run_callback+0x5d/0x2f0
[ 113.808605] __device_suspend+0x11f/0x600
[ 113.808616] ? dpm_watchdog_set+0x60/0x60
[ 113.808634] async_suspend+0x15/0x90
[ 113.808642] async_run_entry_fn+0x34/0x160
[ 113.808652] process_one_work+0x229/0x6a0
[ 113.808670] worker_thread+0x35/0x380
[ 113.808682] ? process_one_work+0x6a0/0x6a0
[ 113.808689] kthread+0x119/0x130
[ 113.808698] ? _kthread_create_on_node+0x60/0x60
[ 113.808709] ret_from_fork+0x3a/0x50
[ 113.808732] Code: 7d 00 48 8b 40 08 e8 b4 be 85 fa be 01 00 00 00 48 89 df
e8 a7 fe ff ff 31 f6 48 89 df e8 9d fe ff ff 5b 89 e8 5d 41 5c 41 5d c3 <0f> 0b
c7 83 50 05 00 00 ff ff ff ff eb e9 bd ed ff ff ff eb e2
[ 113.808964] WARNING: CPU: 3 PID: 1536 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 113.808968] ---[ end trace db1521f152c949c1 ]---
[ 113.838431] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 113.847782] sd 0:0:0:0: [sda] Stopping disk
[ 114.004898] cache: parent cpu1 should not be sleeping
[ 114.006903] cache: parent cpu2 should not be sleeping
[ 114.008898] cache: parent cpu3 should not be sleeping
[ 114.140603] sd 0:0:0:0: [sda] Starting disk
[ 114.147818] WARNING: CPU: 1 PID: 1512 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 114.147822] Modules linked in: snd_hda_intel i915 vgem snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic btusb x86_pkg_temp_thermal btrtl
intel_powerclamp btbcm btintel coretemp crct10dif_pclmul bluetooth crc32_pclmul
ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core ecdh_generic snd_pcm
e1000e mei_me mei prime_numbers [last unloaded: i915]
[ 114.147889] CPU: 1 PID: 1512 Comm: kworker/u8:27 Tainted: G U W
4.16.0-rc7-g1be073153147-drmtip_16+ #1
[ 114.147892] Hardware name: /NUC7i7BNB, BIOS
BNKBL357.86A.0054.2017.1025.1822 10/25/2017
[ 114.147898] Workqueue: events_unbound async_run_entry_fn
[ 114.147905] RIP: 0010:snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 114.147908] RSP: 0000:ffffa2b40085bd28 EFLAGS: 00010246
[ 114.147912] RAX: 00000000ffffffff RBX: ffff9587adad22a8 RCX:
c4ddda5f00000000
[ 114.147914] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff9587adad22a8
[ 114.147916] RBP: 0000000000000000 R08: 000000004bebdccd R09:
0000000000000001
[ 114.147918] R10: 0000000000000000 R11: ffff9587a89ea510 R12:
0000000000000000
[ 114.147920] R13: ffff9587a6b667d8 R14: 0000000000000000 R15:
0000000000000000
[ 114.147922] FS: 0000000000000000(0000) GS:ffff9587bec80000(0000)
knlGS:0000000000000000
[ 114.147925] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 114.147927] CR2: 0000000000000000 CR3: 000000003a210001 CR4:
00000000003606e0
[ 114.147929] Call Trace:
[ 114.147935] ? pci_pm_suspend_late+0x30/0x30
[ 114.147940] azx_resume+0x188/0x250 [snd_hda_intel]
[ 114.147946] dpm_run_callback+0x5d/0x2f0
[ 114.147951] device_resume+0xb3/0x1e0
[ 114.147956] ? dpm_watchdog_set+0x60/0x60
[ 114.147968] async_resume+0x14/0x40
[ 114.147973] async_run_entry_fn+0x34/0x160
[ 114.147981] process_one_work+0x229/0x6a0
[ 114.147994] worker_thread+0x35/0x380
[ 114.148000] ? process_one_work+0x6a0/0x6a0
[ 114.148003] kthread+0x119/0x130
[ 114.148007] ? _kthread_create_on_node+0x60/0x60
[ 114.148013] ret_from_fork+0x3a/0x50
[ 114.148024] Code: 7d 00 48 8b 40 08 e8 b4 be 85 fa be 01 00 00 00 48 89 df
e8 a7 fe ff ff 31 f6 48 89 df e8 9d fe ff ff 5b 89 e8 5d 41 5c 41 5d c3 <0f> 0b
c7 83 50 05 00 00 ff ff ff ff eb e9 bd ed ff ff ff eb e2
[ 114.148134] WARNING: CPU: 1 PID: 1512 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 114.148138] ---[ end trace db1521f152c949c2 ]---
[ 114.878285] Suspending console(s) (use no_console_suspend to debug)
[ 114.881576] WARNING: CPU: 2 PID: 1497 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 114.881579] Modules linked in: snd_hda_intel i915 vgem snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic btusb x86_pkg_temp_thermal btrtl
intel_powerclamp btbcm btintel coretemp crct10dif_pclmul bluetooth crc32_pclmul
ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core ecdh_generic snd_pcm
e1000e mei_me mei prime_numbers [last unloaded: i915]
[ 114.881642] CPU: 2 PID: 1497 Comm: kworker/u8:12 Tainted: G U W
4.16.0-rc7-g1be073153147-drmtip_16+ #1
[ 114.881644] Hardware name: /NUC7i7BNB, BIOS
BNKBL357.86A.0054.2017.1025.1822 10/25/2017
[ 114.881650] Workqueue: events_unbound async_run_entry_fn
[ 114.881659] RIP: 0010:snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 114.881662] RSP: 0018:ffffa2b4007d3cf0 EFLAGS: 00010246
[ 114.881667] RAX: 00000000ffffffff RBX: ffff9587adad22a8 RCX:
00000000fffd2cd9
[ 114.881670] RDX: 0000000000000002 RSI: 0000000000000000 RDI:
ffff9587adad22a8
[ 114.881672] RBP: 0000000000000000 R08: 000000004bebdccd R09:
0000000000000001
[ 114.881675] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[ 114.881677] R13: ffff9587a6b667d8 R14: 0000000000000000 R15:
0000000000000000
[ 114.881680] FS: 0000000000000000(0000) GS:ffff9587bed00000(0000)
knlGS:0000000000000000
[ 114.881683] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 114.881686] CR2: 00007f71d8159788 CR3: 000000003a210001 CR4:
00000000003606e0
[ 114.881688] Call Trace:
[ 114.881696] ? __pm_runtime_use_autosuspend+0x60/0x60
[ 114.881705] hda_codec_runtime_suspend+0x74/0xa0 [snd_hda_codec]
[ 114.881711] pm_runtime_force_suspend+0x34/0xe0
[ 114.881716] dpm_run_callback+0x5d/0x2f0
[ 114.881724] __device_suspend+0x11f/0x600
[ 114.881731] ? dpm_watchdog_set+0x60/0x60
[ 114.881741] async_suspend+0x15/0x90
[ 114.881745] async_run_entry_fn+0x34/0x160
[ 114.881752] process_one_work+0x229/0x6a0
[ 114.881762] worker_thread+0x35/0x380
[ 114.881769] ? process_one_work+0x6a0/0x6a0
[ 114.881773] kthread+0x119/0x130
[ 114.881778] ? _kthread_create_on_node+0x60/0x60
[ 114.881785] ret_from_fork+0x3a/0x50
[ 114.881799] Code: 7d 00 48 8b 40 08 e8 b4 be 85 fa be 01 00 00 00 48 89 df
e8 a7 fe ff ff 31 f6 48 89 df e8 9d fe ff ff 5b 89 e8 5d 41 5c 41 5d c3 <0f> 0b
c7 83 50 05 00 00 ff ff ff ff eb e9 bd ed ff ff ff eb e2
[ 114.881967] WARNING: CPU: 2 PID: 1497 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 114.881971] ---[ end trace db1521f152c949c3 ]---
[ 114.900310] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 114.910427] sd 0:0:0:0: [sda] Stopping disk
[ 115.053896] cache: parent cpu1 should not be sleeping
[ 115.055939] cache: parent cpu2 should not be sleeping
[ 115.057939] cache: parent cpu3 should not be sleeping
[ 115.191113] sd 0:0:0:0: [sda] Starting disk
[ 115.196854] WARNING: CPU: 2 PID: 1533 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 115.196912] Modules linked in: snd_hda_intel
[ 115.196970] i915 vgem snd_hda_codec_hdmi
[ 115.197027] snd_hda_codec_realtek snd_hda_codec_generic btusb
x86_pkg_temp_thermal btrtl intel_powerclamp btbcm btintel coretemp
crct10dif_pclmul bluetooth crc32_pclmul ghash_clmulni_intel snd_hda_codec
snd_hwdep snd_hda_core ecdh_generic snd_pcm e1000e mei_me mei prime_numbers
[last unloaded: i915]
[ 115.197067] CPU: 2 PID: 1533 Comm: kworker/u8:48 Tainted: G U W
4.16.0-rc7-g1be073153147-drmtip_16+ #1
[ 115.197069] Hardware name: /NUC7i7BNB, BIOS
BNKBL357.86A.0054.2017.1025.1822 10/25/2017
[ 115.197074] Workqueue: events_unbound async_run_entry_fn
[ 115.197081] RIP: 0010:snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 115.197083] RSP: 0000:ffffa2b400923d28 EFLAGS: 00010246
[ 115.197087] RAX: 00000000ffffffff RBX: ffff9587adad22a8 RCX:
c4ddda5f00000000
[ 115.197089] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff9587adad22a8
[ 115.197091] RBP: 0000000000000000 R08: 000000004bebdccd R09:
0000000000000001
[ 115.197093] R10: 0000000000000000 R11: ffff9587a89ea510 R12:
0000000000000000
[ 115.197095] R13: ffff9587a6b667d8 R14: 0000000000000000 R15:
0000000000000000
[ 115.197097] FS: 0000000000000000(0000) GS:ffff9587bed00000(0000)
knlGS:0000000000000000
[ 115.197099] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 115.197101] CR2: 0000000000000000 CR3: 000000003a210001 CR4:
00000000003606e0
[ 115.197103] Call Trace:
[ 115.197110] ? pci_pm_suspend_late+0x30/0x30
[ 115.197114] azx_resume+0x188/0x250 [snd_hda_intel]
[ 115.197120] dpm_run_callback+0x5d/0x2f0
[ 115.197125] device_resume+0xb3/0x1e0
[ 115.197130] ? dpm_watchdog_set+0x60/0x60
[ 115.197137] async_resume+0x14/0x40
[ 115.197141] async_run_entry_fn+0x34/0x160
[ 115.197146] process_one_work+0x229/0x6a0
[ 115.197154] worker_thread+0x35/0x380
[ 115.197159] ? process_one_work+0x6a0/0x6a0
[ 115.197162] kthread+0x119/0x130
[ 115.197166] ? _kthread_create_on_node+0x60/0x60
[ 115.197171] ret_from_fork+0x3a/0x50
[ 115.197182] Code: 7d 00 48 8b 40 08 e8 b4 be 85 fa be 01 00 00 00 48 89 df
e8 a7 fe ff ff 31 f6 48 89 df e8 9d fe ff ff 5b 89 e8 5d 41 5c 41 5d c3 <0f> 0b
c7 83 50 05 00 00 ff ff ff ff eb e9 bd ed ff ff ff eb e2
[ 115.197296] WARNING: CPU: 2 PID: 1533 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 115.197298] ---[ end trace db1521f152c949c4 ]---</pre>
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